Core for casting car-wheels.



'Patented May 20, |902...

L. n. uumlr, need.

1. FAGHT, Auminisfrafrix.. CORE F08 CASTIN G, CAR WHEELS..

(Application ld Oct. 2, 1901.)

(No Model.)

WITNESSES UNITED STAT-Es-`v PATENT OFFICE. y

LUTHER R. FAUGH'I,OF PHILADELPHIA, PENNSYLVANIA; MARY J. FAUGHTV ADMINISTRATRIX OF SAID LUTHER R. FAUGHTQDEGEASED.

( cous Fou` CASTING CAR-WHEELS.

SPECIFICATIN forming part of Letters Patent No. 700,313,'dated May-20,1902.

. i 'Applicatie inea october 2, 190i. serial Nomsso. dro' man.) n

To cir/ZZ whom, t may concer-71,: Be it known that I, LUrHER'R. FAUGHT, of Philadelphia, in thecounty of Philadelphia and State ofPennsylvania, have invented a certain new and useful Improvement in Cores for Casting Car-Wheels, of y-whichjmprovement the following yis, a specification.

This invention relates to the manufacture of railroad-car wheelsjoffthe type ordinarily known as loose wheels, which are mounted upon their axles with the capacity of ro-A tationindependently thereof, and of loose 4 wheels of other descriptions; and its object is to provide means whereby a device for holding a loose wheelupon its axle, known as a key-block, maybe' 'installed in operative position in the hub of the wheel when said key-block is of suchform and dimensions as preclude its insertion therein through the central bore or opening of the hub. Instances of key-blocks of the character referredto are exemplified in Letters Patent of the `United States Nos. 687,453 and 687,454,- granted to Luther R. Faught, his heirs or assigns, under date of lNovember 26, 1901.4

To this end theinvention, generally stated,

consists `in the combination of elements hereinafter described,- and then pointed out inthe claims. Y I

The improvement claimed v is hereinafter fully set-forth.

In the accompanying drawings, Figure, 1 is a transverse sectionthrough a coreffor the hub of a loosewheel, illustrating anapplication of my invention, the section being taken on the line ad of Fig. 2; Fig: 2, a longitudinal central section through the same; Fig-f3, a transverse section througha core, showing a diferent form of the key-block, the section being taken on the line h b of Fig. 4; and Fig. 4 a longitudinal central section through the same. l

In the practice of the inventionthe core or internal mold of the wheel-.hub is, as in ordinary practice, formed of-sandg or other` suitf. able refractory and sufticiently-comminuted material and is baked or dried in a core-'oven in the usual manner. As indicated by the dotted outlines, the wheel-hub for casting which the core is designed is vwhen cast provided with aYcentral-bore or opening closed at one end to receive the axle and with @an annular oil-chamberV surrounding the'central bore and communicatingtherewith by lateral oil-passages.` The c ore isimade lin` correcentral cylindrical; body orl stemV1, which constructing the core an annular space or cavity 14 is formed between the stem 1 and the rim 2, whichcavity is closed o n one side by the web 3 and is spanned onthe other side by the arms 4. This cavity may be formed in g any of the ways knownto the art, as by placing an annular ring around the formed stem 1, then forming the rim 2, 'and after removing said ring forming the arms 4.

of cas'tzsteeland `which-when the ,wheel is cast rits andmoves freelyFtoward and from the axialline thereof in the space formed by the web 3 of the core, isseated-in said web at or near its periphery,the front faceof the keyblock'being substantially iiushl o r on a level with that of the web.` As shownin Figs. 1 and 2, the key-block is of lone of the forms illustrated in Letters Patent No. 687,453 aforesaid-that is to say, a-plate having'its inner end segmentally recessed to' fit on a neck or reduced portion of the axle and-having a longitudinal recess 8' extending from its inner end nearly to its top and a transverse passage 8, extending through said recess, these spaces being formed in the key-block for the purposes of lightening it andof affording a lateral vent Y for the mold in casting the wheel. The specitic form of the key-block may,` however, be varied and does not constitute an essential of the present invention.

The setting of the key-block in or its tem 75 vA key-block 8, which s preferably formed 55 L spending formfthat is tosay, it comprises a porary incorporation with the core may be effected in any manner within the ordinary skill of the molder which is deemed most desirable. Thus, for example, the key-block may be placed in the core-box and the damp sand rammed in aroundit, and wires may be inserted through the openings of the keyblock, so as to hold it in place while the core is being baked, after which the meeting surfaces of the key-block and the sand of the core, as Well as the outer face of the keyblock, may be painted over smoothly with common liquid blacking,thickly covering the parts and protecting the key-block from the molten iron in casting the wheel. If the core should at any point be comparatively thin, as at the rear of the key-block, a strip of asbestos paper or analogous strong and fibrous refractory material 5 may be inserted, as shown in Fig. 2. This strip will be reduced to the condition of powder by the heat of the molten iron, so that upon the agitation or jarring of the wheel after it has cooled it will break up and fall out through the central bore of the hub. In some cases it may be found convenient to attach the strip of asbestos paper to the key-block by sllellac Varnish before setting the key-block in the core, the strip approximately covering the portion of the su rface of the key-block adjoining which the Wall of the core is thin.

A main vent G extends substantially throughout the body of the core, and lateral vents 7, leading thereinto, are formed in the web 3 and rim 2, one or more of the lateral vents passing into the interior space ot the key-block S. The escape of gases from all portions of the core and from the space Within the key-block is thereby effectually provided for.

The core is held in positive position in the mold by a metal center support 9, which extends centrally into the body of the core for any desired distance from its outer end and is inserted in the core when green or Wet before baking. The outer end of the support 9 is fitted in a step or bearing l0, which in molding the wheel is set upon a support on the pattern, 'which holds the step in central alinement while the sand is being tucked and rammed around it. Vhen the pattern is withdrawn, the step remains enveloped in the sand of the mold and in this position receives and supports the main core, the center support 9 of the core droppinginto a central bore in the step and resting on the lower portion thereof. The core is thereby truly alined vertically, and when the cope or top section of the mold is closed down upon aprint l on the inner end of the body of the core the set of the core is assured in all directions. It is of course understood that in casting the wheel the core stands vertically upon the base 10, with the print l. uppermost. The center support becomes fast in the Wheel when cast and is cut oil inside and out in finishing the hub. A transverse slot l0 is formed in the step lO in order to prevent disturbance of the setting of the core by sand which :may fall into the central bore of the step, such sand passing off through the slot Without interfering with the adjustment of the center support 9 in the step.

The proper position of the key-block relative to the core is insured by a small stopcore ll, which passes through the transverse passage 8b of thekey-block. The body of the core is preferably stiifened by a longitudinal metal supporting-rod l2, inserted in the body on the side of the axis thereof farther from the main vent ti, and lateralsupports of wire may also be placed in the web 3 between the lateral vents.

The core shown in Figs. 3 and ft accords in all substantial particulars with that above described and is illustrated for the purpose of exemplifying the employment of a different specific form of key-block, which in this instance accords with that set forth in Letters Patent No. 687,45t aforesaid.

I claim as myinvention and desire to secure by Letters Patent*- l. The combination of a core having a central body or stem, an annular rim, a transverse Web connecting the body with the rim,- at or near one end of the latter, and lateral ribs connecting the rim, at or near its opposite end, with the body, a key-block seated in the web of the core, supports for maintaining the core and key-block in normal form and location, and main and lateral vents formed in the core.-

2. The combination of a core having a ceutral body or stem, a transverse web, and a print at one end, a center support fitted in and projecting from the body of the core at the end opposite the print, a step or bearing in which said center support is itted, and a key-block seated in the web of the core.

3. The combination of a core having a central body or stem and a transverse Web, a keyblock seated in the web of the core and hav= ing internal spaces or passages, a center support fitted in and projecting from the body of the core, and a stop-core iittingin the Web of the core and in one of the passages of the key-block.

4t. The combination of a core having a central body or stem and a transverse web, a keyblock seated in the web of the core and having internal spaces or passages, a main vent extending throughout the major portion of the length of the body of the core, and a lateral vent formed in the web of the core and connecting one of the internal spaces of the key-block with the main vent.

5. The combination of a core having a ceutral body or stem and a transverse web, a keyblock seated in the web of the core, and a strip of refractory material, as asbestos paper or the like, fitted in the core adjacent to the key-block.

IOO

6; The'com'bination ofa core having a cen" era1-vent`forrned-in the `Web'of `che Core and tral body'or stem and a. transverse web, a. Aleading into the'main'vent.' center support ttedn and projecting from one-end of thebody of the core, akey-bloek LUTHER R FAUGHT f 5 seated in the web ofthe core, a. main vent Witnesses:

extending throughoutthe `major portion of- ISAAC M. YOUNG,y the length ef the body of the cole-and a lat GEO. W.- CLEMENT. 

